GWC specializes in the following: concrete waterproofing, concrete restoration, corrosion control, concrete protection, concrete preservation, xypex admixture, xypex crystalline waterproofing, blast resistant, structural hardening, impact resistance, crack injection, crack repair, hydroactive grout, swelling sealant, expansion joints, pressure resistant, acid resistant, chemical resistant, freeze resistant, thaw resistant, radiation resistant, environmentally friendly, concrete coatings, concrete membranes, concrete resurfacing, concrete repair, concrete leaks, corroded steel rebar, repair basement leaks, seal basement leaks, parking structure repair, parking structure coatings, parking structure waterproofing, parking structure restoration, foundation leaks, foundation crack repair, foundation waterproofing, foundation coatings, migrating waterproofing

WHAT IS XYPEX®? Xypex® is a non-toxic, chemical treatment for the waterproofing and protection of concrete. Xypex's primary and most distinguishing performance feature is its unique ability to generate a non-soluble crystalline formation deep within the pores and capillary tracts of the concrete -- a crystalline structure that permanently seals the concrete against the penetration of water and other liquids from any direction. Presentation on Xypex® Click Here to open or save a copy of this PowerPoint presentation HOW DOES XYPEX® WORK? To create its crystalline waterproofing effect, Xypex® must become an integral part of the concrete mass. This is based on two simple reactions, one chemical and the other physical. Concrete is both porous (capillary tract system) and chemical in nature. By means of diffusion, the reactive chemicals in Xypex® use water as a migrating medium to enter and travel through the capillary tracts in the concrete. This process precipitates a chemical reaction between Xypex®, moisture and the natural chemical by-products of cement hydration (calcium hydroxide, mineral salts, mineral oxides and unhydrated and partially hydrated cement particles). The result is crystallization and, ultimately, a non-soluble crystalline structure that plugs the pores and capillary tracts of the concrete. This will continue to migrate through the concrete and the crystalline growth will form behind this advancing front of chemicals. This process will reactivate whenever water is present, thus making the concrete totally sealed against the penetration of water (or other liquids) from any direction. Click Here to play or save a video presentation of what Xypex is (2:58 / 4.61MB). HOW LONG DOES IT LAST? A Xypex® application, UNLIKE MOST OTHER SYSTEMS, is permanent. The fibrous crystalline growth, due to its unique composition, will not deteriorate under normal conditions. Our children's children will benefit from applications of Xypex today. HOW IS XYPEX® DIFFERENT FROM OTHER PRODUCTS? The process by which Xypex® waterproofs concrete is unique in that Xypex® is a CATALYST. This crystalline growth is highly resistant to extreme water pressure from either side of the concrete and also to most aggressive chemicals. Since the process is catalytic, the crystalline structure can reactivate many years after the original application, to seal or re-seal many defects which might occur in the concrete at a later time.

The crystallization process that Xypex^® causes within the pores and capillary tracts of concrete is illustrated below in electron microscope photos taken by an independent research team.

		1. CONCRETE (UNTREATED) A control sample of concrete was sheared through at 50mm below the top surface. The sheared face shows some of the by-products of cement hydration with which Xypex® reacts. Precipitated calcium hydroxide together with cubic and rhombic particles are visible.
		2. XYPEX® CRYSTALLIZATION (INITIATION) Taken at 50mm within a Xypex-treated concrete sample, This photograph shows the initiation of the Xypex® crystalline reaction after Xypex® Concentrate was applied to the surface.
		3. XYPEX® CRYSTALLIZATION (MATURE) This photo was taken 26 days after the application of Xypex® Concentrate at a depth of 50mm into the concrete sample. A dense, fully developed crystalline structure has formed within the capillary tracts of the concrete to completely block the flow of water.

The above steps depict the process by which Xypex^® penetrates and blocks the flow of water and other liquids.

WHY XYPEX^®?

Xypex^® introduces a reactive, dynamic densification process which continues throughout the life of the concrete. Being a permanent enhancement, Xypex^® will extend the service life of the concrete. Unlike barrier methods, Xypex^® penetrates and waterproofs the concrete itself -- not just the surface. While other products degrade over time, Xypex^® continues on.

XYPEX^® BENEFITS

1. Xypex^® is less expensive than other methods such as membranes with protective boards.
2. Xypex^® is construction-schedule friendly, and it can be applied immediately after the forms are stripped.
3. Xypex^® cannot puncture, tear, or fall apart at the seams -- and it needs no special sealing, lapping, or seam finishing.
4. Xypex^® needs no protective layers for backfill, and it leave no ugly tar line to interfere with landscaping.
5. Xypex^® is breathable. It blocks water in liquid form, but allows water vapor to escape, so the concrete can dry completely.
6. Xypex^® is self-healing. New cracks in the concrete (up to 1/64") will mend with new crystalline growth.
7. Xypex^® is environmentally friendly - approved by the E.P.A. and the NSF.
8. Xypex^® protects concrete. Crystalline waterproofing stops transportation of water and rust-accelerating electrolytes to the reinforcing steel.

For additional information, please select the following links:

The Xypex® Application Process

Xypex® FAQ

Xypex® Performance Characteristics

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Xypex® is a registered trademark of the Xypex Chemical Corporation.